Nut-locking washer.



R. w. AMMONS.

NUT LOOKING WASHER. APPLIOATION FILED DBO. 23, 1910.

997,359. 1 Patented July 11,1911.

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Be it known that I, RALPH W. .Auuons,

a citizen of the United States, residing at Los Angeles inthe county of Los Angeles and State of California, have invented certain new and useful Im rovements Nut- Locking Washers; and ,do declare the following to be a full, clear, and exact description of. the invention, such as will enable others skilled in the art to which it apper-,

' tains to make and use the same:

. ockin'gdevices adapted to'engage the inner Thisinvention relates to improvements in nut locking washers.v

,One object of the invention is toprovide a washer of this character having an imroved construction and arrangement of sideof-thenut and the outer surface of the object to which the same is applied.

Anotherobject is to provide a nut lockin washer which will be sim 1e, strong an durable in construction eflicient and reliable in operation and in which the locking device a may be readily arranged to permit the use of the Washer with both right and left hand nuts.

With the foregoing and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and particularly pointed out in the appended claims.

In the. accompanying drawings: Figure 1 is a side elevation of a bolt and nut and a sectional view through two plates fastened together thereby showing the application of the washer; Fig. 2 is a perspective view of the washer; Fig. 3-is a vertical cross sectional view'of the same.

My improved nut locking washer comprises a disk 1 formed-ofspring metal. The

washer may be of any suitable size and shape and is here shown as being of circular form and having a centrally disposed circular opening 2 to receive the bolt to which the same is applied. Around the outer edge of the washer and spaced at suitable dis-v tances apart area series of radially disposed oppositely bent locking teeth 3 and; said' teeth being formed by forming radially dis posed slits at the-outer ends of the washer said slits terminating at'their inner ends in holes or passages 5. In the washer are also formed short segmental slits 6 which communicate with the holes or passages 5. The Y Specification of Letters Patent. Pate t Application fled necember 533,1910. 8erial.lIo.-598',968.

' therein outer and inner nor-rooms wasnaa.

parts of the washer thus cut bythe radial.

slits and the segmental slits 6. are bent in opposite directions to form the teeth 3 and4. The outer corners of the teeth when thus formed provide shar edges which'bite on cut into the inner sur ace of the nutand the adjacent surface of the object to which washer P lied- In the center of washer aroun the opening 2 is also formed aninner' series of radially o terminating in holes or p v 9 with which also communicate segmental slitsiO.

The material thus cut is bent in opposite directions and forms the teeth. 7" and-8.

The inner series of teeth 7 and 8 are arranged between the outer series :of teeth-3 -.and 4 asshown.

- The spring action of the-teethfwhich' en screwed down into e washer, w1ll cause the s arpcornersof the teeth to frictionally 'engageor'bit e into the I. as sitely projecting-locking teeth- 7 and'B w are formed by slitting the metal olitwardly. from the edges of the opening 2, said -slits'-- engaging portions of thenut or object thus." preventing the washer from turning on the object and the nut from-.turningon the washer. By thus constructing the teeth the washer has a double lockin capacitylthereby insuring the firm hol against casual unscrewi from the bolt.

In the accompanying awings, the teeth of the washer are shown as bein a for looking a right hand threaded nut, it will be obvious however that by' simply bending the teeth in an opposite direction to that shown, that the washer may be employed for looking a left hand threaded nut. From the foregoing description taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation. Various changes in the form, proportion gof the nut and the minor details of construction may.

be resorted to without departing from the tages of the invention as defined in the appended claims.

Having thus described my invention what I claim is:

formed radially 1. K nut locking washer ha series 02 ,principle or sacrificing any of the advan-' disposed locking teeth: said teeth being arranged in pairs and the teeth of each pair v washer may be employed for locking either right or left hand threaded nuts.

2. A nut locking washer having formed.

therein inner and outer series of radially disposed slits, said slits terminating at their inner ends in holes or passageswith which also'connect segmental slits, said slitted por tions of the washer forming teeth, said teeth being bent in opposite directions to project beyond the opposite side of the washer whereby the outer corners of the teeth will bite into the engaging portions of the nut and object to which the same is applied thereby holding the-nut against unscrewing.

to project beyond the opposite sides of the washer whereby a locking engagement is had both with the inner side of the nut and the outer surface of the object to which the same is applied. 1

In test mony whereof I have hereunto set my hand in presence of two subscribing wltnesses.

I RALPH- w. AMMONS.

Witnesses:

G. H. Class, B. H. GRAY; 

